The embodiments of the application provide feedback information sending or receiving methods, devices and a system, and relate to the field of communication. The method includes that: a first bit length is determined, the first bit length being a number of bits for representing Transport Block (TB)-level feedback response information; a second bit length is determined, the second bit length being a number of bits for representing target TB indication information; feedback information is generated according to the first bit length and the second bit length, the feedback information including the TB-level feedback response information, the target TB indication information and code block group-level feedback response information; and the feedback information is sent.
Legal claims defining the scope of protection. Each claim is shown in both the original legal language and a plain English translation.
1. A feedback information sending method, comprising: determining a first bit length, the first bit length being a number of bits for representing Transport Block (TB)-level feedback response information; determining a second bit length, the second bit length being a number of bits for representing target TB indication information; generating feedback information according to the first bit length and the second bit length, the feedback information comprising the TB-level feedback response information, the target TB indication information and code block group-level feedback response information; and sending the feedback information; wherein the target TB indication information is used for indicating at least one target TB corresponding to the code block group-level feedback response information.
This invention relates to wireless communication systems, specifically methods for sending feedback information in scenarios involving Transport Blocks (TBs) and code block groups (CBGs). The problem addressed is the efficient transmission of feedback data, particularly when multiple TBs and CBGs are involved, to reduce overhead and improve communication reliability. The method involves determining a first bit length for representing TB-level feedback response information, which indicates the overall status of a TB. A second bit length is determined for target TB indication information, which identifies specific TBs associated with CBG-level feedback. Feedback information is then generated, combining TB-level feedback, target TB indication, and CBG-level feedback. The target TB indication links CBG-level feedback to the relevant TBs, allowing precise error reporting or acknowledgment. This structured approach optimizes feedback transmission by minimizing redundant data while maintaining detailed error tracking. The solution is particularly useful in systems where TBs are divided into CBGs, such as in advanced wireless protocols like 5G New Radio (NR), where efficient feedback mechanisms are critical for reliable data delivery. By dynamically adjusting bit lengths and associating CBG feedback with specific TBs, the method enhances feedback accuracy and reduces signaling overhead.
2. The method as claimed in claim 1 , wherein the TB-level feedback response information comprises Non-Acknowledges (NACKs) for n TBs, n being a positive integer; and at least one target TB indicated by the target TB indication information is at least one TB in the n TBs.
This invention relates to wireless communication systems, specifically improving feedback mechanisms for data transmission reliability. The problem addressed is the inefficiency in handling feedback for multiple transport blocks (TBs) in high-speed data transmissions, where traditional methods may lead to redundant or delayed acknowledgments, degrading system performance. The invention provides a method for transmitting feedback information in a wireless communication system. It involves generating feedback response information at the receiving end, which includes Non-Acknowledges (NACKs) for multiple TBs, where the number of TBs (n) is a positive integer. The feedback also includes target TB indication information, which identifies at least one TB among the n TBs that requires special handling or prioritization. This allows the transmitter to focus on retransmitting only the critical TBs, improving efficiency and reducing latency. The method ensures that the feedback response is structured to minimize overhead while ensuring reliable data delivery. By selectively indicating target TBs, the system can optimize resource usage and enhance overall throughput. This approach is particularly useful in scenarios with high data rates or stringent latency requirements, such as in 5G and beyond networks. The invention improves feedback mechanisms by making them more adaptive and efficient, addressing the limitations of conventional methods.
3. The method as claimed in claim 1 , wherein determining the second bit length comprises: determining the second bit length according to the first bit length.
This invention relates to data compression techniques, specifically methods for dynamically adjusting bit lengths in encoded data to improve compression efficiency. The problem addressed is the need to optimize bit allocation in variable-length encoding schemes, where fixed bit lengths may lead to inefficient storage or transmission of data. The invention provides a method to dynamically determine a second bit length based on a first bit length, allowing adaptive compression that balances precision and storage requirements. The method involves analyzing the first bit length, which represents an initial encoding parameter, and calculating the second bit length accordingly. This adjustment ensures that the encoding process adapts to the characteristics of the data being compressed, such as its entropy or distribution. By dynamically determining the second bit length, the method avoids the inefficiencies of static bit allocation, leading to more compact representations of data. The technique is particularly useful in applications where data patterns vary significantly, such as multimedia encoding, network transmission, or database storage. The adaptive bit length determination helps reduce redundancy while maintaining data integrity, improving overall compression performance.
4. The method as claimed in claim 3 , wherein determining the second bit length according to the first bit length comprises: determining that the second bit length is equal to a first numerical value, the first numerical value being ┌log 2 N┐ or └log 2 N┘ or ┌β·N┐ or └β·N┘, where β is a positive value less than I and N is the first bit length; or, determining that the second bit length 1s equal to a smaller value m the first numerical value and a first threshold value.
This invention relates to methods for determining bit lengths in digital systems, particularly for optimizing data representation or processing efficiency. The problem addressed involves selecting an appropriate second bit length based on a first bit length to improve performance, storage, or computational efficiency in digital systems. The method involves determining a second bit length based on a first bit length, where the second bit length is derived from a first numerical value. The first numerical value is calculated using one of several mathematical operations: the ceiling or floor of the base-2 logarithm of the first bit length (N), or the ceiling or floor of a scaled version of the first bit length (β·N), where β is a positive value less than 1. Alternatively, the second bit length may be set to the smaller of the first numerical value and a predefined threshold value. This approach ensures that the second bit length is optimized for specific constraints, such as hardware limitations or performance requirements, while maintaining compatibility with the original data representation. The method is particularly useful in applications requiring efficient data encoding, compression, or processing in digital systems.
5. The method as claimed in claim 1 , wherein determining the second bit length comprises: determining the second bit length according to a number of Non-Acknowledges (NACKs) in the TB-level feedback response information.
This invention relates to wireless communication systems, specifically to methods for determining bit length in transmission block (TB)-level feedback responses. The problem addressed is efficiently managing feedback information in high-speed data transmissions, where excessive bit length can reduce efficiency while insufficient bit length may fail to convey necessary feedback. The method involves adjusting the bit length of a feedback response based on the number of Non-Acknowledges (NACKs) in the TB-level feedback response information. A higher number of NACKs, indicating more failed transmissions, requires a longer bit length to accurately convey the feedback. Conversely, fewer NACKs allow for a shorter bit length, optimizing bandwidth usage. The feedback response is generated by a receiving device and transmitted back to a transmitting device, enabling adaptive retransmission strategies. The method ensures that the feedback response is dynamically adjusted to balance accuracy and efficiency, reducing unnecessary overhead while maintaining reliable communication. This approach is particularly useful in scenarios with varying channel conditions or dynamic data rates, where static bit lengths would be suboptimal. The invention improves system throughput and reliability by dynamically allocating bit length based on real-time feedback conditions.
6. The method as claimed in claim 5 , wherein determining the second bit length according to the number of the NACKs in the TB-level feedback response information comprises: determining that the second bit length is equal to a second numerical value, the second numerical value being the number of the NACKs in the TB-level feedback response information; determining that the second bit length is equal to a smaller value in the second numerical value and a second threshold value.
This invention relates to wireless communication systems, specifically to methods for determining bit length in feedback response information for transport block (TB) transmissions. The problem addressed is efficiently managing feedback overhead in scenarios where multiple transport blocks are transmitted, particularly when some are successfully received and others are not (NACKs). The invention provides a method to dynamically adjust the bit length of feedback response information based on the number of NACKs in the TB-level feedback. The method involves determining a second bit length for the feedback response by first calculating a second numerical value equal to the number of NACKs in the TB-level feedback response information. The second bit length is then set to the smaller value between this second numerical value and a predefined second threshold value. This ensures that the feedback response remains compact while accurately conveying the necessary information about failed transmissions. The method optimizes feedback efficiency by dynamically adjusting the bit length according to the number of NACKs, reducing unnecessary overhead in scenarios with fewer errors while ensuring sufficient information is provided when errors are more frequent. This approach is particularly useful in high-throughput wireless systems where efficient feedback mechanisms are critical for reliable communication.
7. The method as claimed in claim 1 , wherein determining the second bit length comprises: determining the second bit length according to the first bit length and a number of Non-Acknowledges (NACKs) in the TB-level feedback response information.
This invention relates to wireless communication systems, specifically improving feedback mechanisms for data transmission. The problem addressed is efficiently determining the bit length for feedback responses in hybrid automatic repeat request (HARQ) processes, particularly when handling transport block (TB)-level feedback. Traditional methods may not optimally allocate bit lengths based on feedback content, leading to inefficiencies in bandwidth usage and processing. The method involves adjusting the bit length for a second feedback response based on the bit length of a first feedback response and the number of negative acknowledgments (NACKs) in the TB-level feedback. The first feedback response is generated for a data transmission, where the bit length is determined by the number of code blocks (CBs) in the transmission. The second feedback response is then adjusted by considering both the initial bit length and the count of NACKs in the TB-level feedback, ensuring optimal resource allocation. This approach dynamically adapts feedback bit lengths to reduce overhead while maintaining reliability in error detection and retransmission processes. The solution is particularly useful in scenarios with varying data block sizes and error rates, enhancing overall system efficiency.
8. The method as claimed in claim 7 , wherein determining the second bit length according to the first bit length and the number of the NACKs in the TB-level feedback response information comprises: determining that the second bit length is equal to a smaller value in a third numerical value and a second numerical value; or, determining that the second bit length 1s equal to a smaller value m the third numerical value and a third threshold value, the third numerical value being ┌log 2 N┐ or └log 2 N┘ or ┌β·N┐ or └β·N┘, where β is a positive value less than I and N is the first bit length, and the second numerical value being the number of the NACKs in the TB-level feedback response information.
This invention relates to wireless communication systems, specifically methods for determining bit length in feedback response information for hybrid automatic repeat request (HARQ) processes. The problem addressed is efficiently managing feedback bit length in response to transmission block (TB) feedback, particularly when negative acknowledgments (NACKs) are received, to optimize resource usage and reliability. The method involves determining a second bit length for feedback based on a first bit length and the number of NACKs in TB-level feedback response information. The second bit length is set to the smaller value between a third numerical value and either a second numerical value (the number of NACKs) or a third threshold value. The third numerical value is derived from the first bit length (N) using logarithmic or scaled logarithmic functions, such as ceiling or floor of log2(N), or scaled versions (β·N, where β is a positive value less than 1). This ensures the feedback bit length adapts dynamically to the number of NACKs, balancing overhead and accuracy. The approach optimizes feedback efficiency in scenarios with varying error rates, improving system performance in wireless communication networks.
9. The method as claimed in claim 2 , wherein when the second bit length is less than or equal to a number of the NACKs in the TB-level feedback response information, the target TB indication information is used for indicating that first P TBs or last P TBs corresponding to the NACKs in the TB-level feedback response information are target TBs, P being the second bit length.
This invention relates to wireless communication systems, specifically to methods for transmitting transport block (TB) feedback in hybrid automatic repeat request (HARQ) processes. The problem addressed is efficiently indicating target transport blocks (TBs) for retransmission when the feedback information is limited in bit length. The method involves generating a TB-level feedback response that includes negative acknowledgments (NACKs) for received TBs. When the bit length of the feedback (second bit length) is insufficient to individually acknowledge all NACKs, the system uses target TB indication information to specify which TBs are prioritized for retransmission. The indication can point to either the first P or last P TBs corresponding to the NACKs, where P equals the second bit length. This approach ensures that even with limited feedback capacity, critical TBs are identified for retransmission without requiring excessive signaling overhead. The method optimizes HARQ feedback efficiency in scenarios where the number of NACKs exceeds the available feedback bits, improving system reliability and throughput.
10. The method as claimed in claim 2 , wherein when the second bit length is larger than a number of the NACKs in the TB-level feedback response information, first Q bits in the target TB indication information are used for indicating that the TBs corresponding to the NACKs in the TB-level feedback response information are target TBs, Q being the number of the NACKs in the TB-level feedback response information.
This invention relates to wireless communication systems, specifically to methods for handling transport block (TB) feedback in hybrid automatic repeat request (HARQ) processes. The problem addressed is efficiently indicating target transport blocks (TBs) for retransmission when the feedback information includes negative acknowledgments (NACKs) for multiple TBs. The method involves generating a TB-level feedback response that includes NACKs for one or more TBs. When the bit length of the feedback response is larger than the number of NACKs, the first Q bits of the target TB indication information are used to identify which TBs corresponding to the NACKs are designated as target TBs for retransmission. Here, Q equals the number of NACKs in the feedback response. This approach ensures that only the necessary TBs are retransmitted, improving efficiency in HARQ processes by reducing unnecessary retransmissions and optimizing resource usage in wireless communication systems. The method is particularly useful in scenarios where multiple TBs are transmitted and feedback needs to be compactly and accurately conveyed to the transmitter.
11. The method as claimed in claim 1 , before generating the feedback information according to the first bit length and the second bit length, further comprising: determining a third bit length, the third bit length being a bit length corresponding to the code block group-level feedback response information, wherein generating the feedback information according to the first bit length and the second bit length comprises: generating the feedback information according to the first bit length, the second bit length and the third bit length.
This invention relates to wireless communication systems, specifically to methods for generating feedback information in response to received data transmissions. The problem addressed is the efficient and accurate transmission of feedback information, such as acknowledgment (ACK) or negative acknowledgment (NACK) signals, in scenarios where data is transmitted in code blocks or code block groups. The invention improves feedback mechanisms by incorporating additional bit length parameters to enhance the granularity and reliability of feedback responses. The method involves determining a third bit length corresponding to code block group-level feedback response information, in addition to first and second bit lengths associated with other feedback levels. Feedback information is then generated based on all three bit lengths, allowing for more detailed and flexible feedback reporting. This approach enables the system to adapt to different transmission conditions and requirements, improving overall communication efficiency and reliability. The method is particularly useful in scenarios where multiple code blocks or code block groups are transmitted, ensuring that feedback can be provided at the appropriate level of granularity. By incorporating the third bit length, the system can better handle complex feedback scenarios, such as those involving hybrid automatic repeat request (HARQ) processes or multi-user communication environments. The invention enhances the robustness of feedback mechanisms in wireless communication systems, leading to improved data transmission performance.
12. The method as claimed in claim 11 , wherein determining the third bit length comprises: determining the third bit length according to a total bit length of the feedback information; or, receiving configuration signaling sent by a network-side device, and determining the third bit length according to the configuration signaling.
This invention relates to wireless communication systems, specifically methods for determining bit length in feedback information for channel state reporting. The problem addressed is efficiently managing feedback information bit length to balance accuracy and overhead in communication systems. The method involves determining a third bit length for feedback information, which can be derived in two ways. First, the third bit length is calculated based on the total bit length of the feedback information. This ensures the bit length is dynamically adjusted according to the amount of data being transmitted. Second, the third bit length is determined by receiving configuration signaling from a network-side device, such as a base station, which provides predefined bit length parameters. This allows the network to control feedback information size based on system requirements. The feedback information may include channel state information (CSI) or other data used for link adaptation, beamforming, or resource allocation. By dynamically or pre-configured bit length determination, the method optimizes feedback efficiency while maintaining communication reliability. This approach is particularly useful in systems with limited bandwidth or high mobility, where feedback overhead must be minimized without sacrificing performance.
13. The method as claimed in claim 12 , wherein determining the third bit length according to the total bit length of the feedback information comprises: determining the total bit length of the feedback information according to downlink control signaling, and determining the third bit length according to the total bit length, the first bit length and the second bit length; or, determining the total bit length of the feedback information according to high-layer signaling, and determining the third bit length according to the total bit length, the first bit length and the second bit length.
In wireless communication systems, efficient feedback of channel state information (CSI) is critical for optimizing data transmission. A method addresses the challenge of dynamically allocating bit lengths for feedback information to balance accuracy and overhead. The method involves determining a third bit length for feedback information based on the total bit length of the feedback, a first bit length for a first type of feedback, and a second bit length for a second type of feedback. The total bit length of the feedback information can be derived from downlink control signaling or high-layer signaling. Once the total bit length is known, the third bit length is calculated by subtracting the first and second bit lengths from the total bit length. This approach ensures flexible and adaptive feedback reporting, allowing the system to adjust the bit allocation dynamically based on network conditions or configuration. The method supports efficient resource utilization while maintaining reliable channel state reporting.
14. The method as claimed in claim 1 , further comprising: determining a fourth bit length Ti of an ith target TB, Ti being greater than or equal to 1, 1≤i≤X and X is a number of at least one target TB indicated by the target TB indication information indicated by the target TB indication information; and generating feedback response information for each code block group in the ith target TB according to the fourth bit length Ti.
This invention relates to wireless communication systems, specifically to methods for generating feedback response information for code block groups in target transport blocks (TBs). The problem addressed is efficiently managing feedback for multiple target TBs, particularly when different TBs may require varying amounts of feedback information. The method involves determining a bit length (Ti) for each target TB, where i ranges from 1 to X (the number of target TBs indicated by target TB indication information). Each Ti must be at least 1 bit. For each code block group within the ith target TB, feedback response information is generated based on the determined bit length Ti. This allows flexible feedback generation tailored to the size or importance of each TB, improving efficiency in wireless communication systems. The method ensures that feedback is generated in a structured manner, accommodating varying feedback requirements for different TBs. By dynamically adjusting the bit length for each TB, the system can optimize resource usage while maintaining reliable communication. This approach is particularly useful in scenarios where multiple TBs are transmitted simultaneously or in quick succession, requiring efficient feedback mechanisms to manage data integrity and transmission efficiency.
15. The method as claimed in claim 14 , wherein determining the fourth bit length Ti of the ith target TB comprises: determining that Ti is equal to a maximum number of code block groups in one TB; or, determining that Ti is equal to a number of code block groups in the ith target TB; or, determining that Ti is equal to a third numerical value, the third numerical value being determined according to a third bit length, the third bit length being a bit length corresponding to the code block group-level feedback response information.
This invention relates to wireless communication systems, specifically methods for determining the bit length of a target transport block (TB) in a communication process. The problem addressed is efficiently managing feedback response information at the code block group (CBG) level to optimize data transmission and retransmission in wireless networks. The method involves determining a fourth bit length (Ti) for the ith target TB. This determination can be made in three ways. First, Ti can be set equal to the maximum number of code block groups in a single TB, ensuring a fixed bit length regardless of the actual number of CBGs in the target TB. Second, Ti can be set equal to the actual number of CBGs in the ith target TB, allowing the bit length to vary based on the TB's composition. Third, Ti can be set equal to a third numerical value, which is derived from a third bit length corresponding to the CBG-level feedback response information. This third bit length is determined based on the feedback mechanism used, ensuring compatibility with the communication protocol's feedback structure. The method supports flexible and efficient feedback handling, improving reliability and throughput in wireless communications by adapting the bit length to different TB configurations and feedback requirements.
16. The method as claimed in claim 15 , wherein determining the fourth bit length Ti of the ith target TB comprises: setting T X = Y - ∑ i = 1 X - 1 T i , where Tx is a bit length corresponding to an Xth target TB, and Y is the third bit length; or, in a case where ∑ i = 1 X N i C B G > Y , N i CBG being the number of code block groups in the ith target TB, determining Ti in a manner of compressing feedback response information corresponding to each code block group in all or part of the target TBs to make Ti meet ∑ i = 1 X T i ≤ Y .
This invention relates to wireless communication systems, specifically to methods for determining bit lengths for target transport blocks (TBs) in feedback response information. The problem addressed is efficiently allocating bit lengths for feedback responses while ensuring the total bit length does not exceed a predefined limit, particularly in scenarios where the number of code block groups (CBGs) in the target TBs may exceed available resources. The method involves calculating a bit length (T_i) for each target TB (TB_i) based on a total available bit length (Y). Initially, the bit length for an Xth target TB (T_X) is set as the difference between Y and the sum of bit lengths of all previously calculated target TBs (T_1 to T_X-1). If the sum of CBGs across all target TBs (Σ_i=1^X N_i_CBG) exceeds Y, the method adjusts the bit lengths by compressing feedback response information for CBGs in some or all target TBs. This ensures the total bit length (Σ_i=1^X T_i) does not exceed Y, even when resource constraints are tight. The approach optimizes feedback efficiency while maintaining compliance with system limitations.
17. The method as claimed in claim 14 , wherein generating the feedback response information for each code block group in the ith target TB according to the fourth bit length Ti comprises: when Ti is smaller than a number of code block groups in the ith target TB, compressing the feedback response information corresponding to each code block group in the ith target TB to obtain compressed feedback response information, a volume of the compressed feedback response information being not larger than Ti.
This invention relates to wireless communication systems, specifically to methods for generating and compressing feedback response information in transmission blocks (TBs) to optimize data transmission efficiency. The problem addressed is the need to reduce the overhead of feedback responses in communication systems where the available bit length for feedback is limited, particularly when the number of code block groups in a transmission block exceeds the available bit length. The method involves generating feedback response information for each code block group within a target transmission block (TB). When the available bit length (Ti) for feedback is smaller than the number of code block groups in the TB, the feedback response information for each code block group is compressed. The compression ensures that the total volume of the compressed feedback response information does not exceed the available bit length (Ti). This approach allows efficient transmission of feedback responses even under constrained bit length conditions, improving system performance by reducing overhead while maintaining reliability. The compression technique ensures that critical feedback data is preserved without exceeding the available transmission capacity.
18. A feedback information sending device, comprising: a processor; and a memory, the memory storing at least one instruction which is to be executed by the processor to implement the following steps: determining a first bit length, the first bit length being a number of bits for representing Transport Block (TB)-level feedback response information; determining a second bit length, the second bit length being a number of bits for representing target TB indication information; generating feedback information according to the first bit length and the second bit length, the feedback information comprising the TB-level feedback response information, the target TB indication information and code block group-level feedback response information; and sending the feedback information; wherein the target TB indication information is used for indicating at least one target TB corresponding to the code block group-level feedback response information.
Wireless communication device for transmitting feedback. This invention addresses the need to efficiently convey feedback related to data transmission, specifically Transport Blocks (TBs) and code block groups. A processor executes instructions stored in memory. The processor determines a first bit length, which defines the number of bits used to represent feedback response information at the TB level. Concurrently, a second bit length is determined, specifying the number of bits required to indicate target TBs. Feedback information is then generated, incorporating the TB-level feedback response information, the target TB indication information, and code block group-level feedback response information. This generated feedback information is subsequently transmitted. The target TB indication information serves to identify one or more specific TBs that are relevant to the code block group-level feedback response information.
19. A feedback information receiving device, comprising: a processor; and a memory, the memory storing at least one instruction which is to be executed by the processor to implement the following steps: receiving feedback information; determining a first bit length; reading Transport Block (TB)-level feedback response information from the feedback information according to the first bit length; determining a second bit length; reading target TB indication information from the feedback information according to the second bit length; and determining at least one target TB according to the target TB indication information, and reading code block group-level feedback response information of the at least one target TB from the feedback information; wherein the target TB indication information is used for indicating the at least one target TB corresponding to the code block group-level feedback response information.
This invention relates to wireless communication systems, specifically to a device for processing feedback information in high-speed data transmission scenarios. The problem addressed is the efficient extraction and interpretation of feedback data, particularly when dealing with large transport blocks (TBs) divided into smaller code block groups (CBGs). Traditional methods struggle with accurately parsing feedback that includes both TB-level and CBG-level responses, leading to inefficiencies in error detection and retransmission. The device includes a processor and memory storing instructions to execute a feedback processing method. Upon receiving feedback information, the device first determines a first bit length to extract TB-level feedback response data, which provides an overall assessment of the transport block. Next, it determines a second bit length to read target TB indication information, which identifies specific TBs that require detailed CBG-level feedback. The device then uses this indication to locate and extract CBG-level feedback response data for the identified TBs. This hierarchical approach allows for precise error tracking at both the TB and CBG levels, improving retransmission efficiency in wireless communication systems. The invention ensures accurate parsing of feedback data by dynamically adjusting bit lengths for different feedback types, optimizing resource usage and reducing processing overhead.
Cooperative Patent Classification codes for this invention. Click any code to explore related patents in that topic.
January 2, 2018
February 22, 2022
Browse 5M+ US patents with plain-English claim translations and AI-generated analysis.